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            <h2 class="title" style="clear: both"><a id="reppriority"></a>DB_ENV-&gt;rep_set_priority()</h2>
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      <pre class="programlisting">#include &lt;db.h&gt;

int
DB_ENV-&gt;rep_set_priority(DB_ENV *env, u_int32_t priority);  </pre>
      <p>
         The <code class="methodname">DB_ENV-&gt;rep_set_priority()</code> method specifies the database
         environment's priority in replication group elections.  A special
         value of 0 indicates that this environment cannot be a replication
         group master.
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      <div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
        <h3 class="title">Note</h3>
        <p>
            The
            <a class="xref" href="repmgrset_ack_policy.html" title="DB_ENV-&gt;repmgr_set_ack_policy()">DB_ENV-&gt;repmgr_set_ack_policy()</a>
            method describes <span class="emphasis"><em>electable peers</em></span>, which
            are replication sites with a non-zero priority. For some
            acknowledgement policies, Replication Manager's computation of
            the durability result for each new update transaction is
            sensitive to whether each site in the group is a peer.
            Therefore, if you change a site's priority from a non-zero
            value to <code class="literal">0</code>, or from <code class="literal">0</code> to
            a non-zero value, this can invalidate the durability result of
            previously committed transactions.
        </p>
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         The database environment's replication subsystem may also be
         configured using the environment's <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file.  The syntax
         of the entry in that file is a single line with the string
         "rep_set_priority", one or more whitespace characters, and the
         priority of this site. For example, "rep_set_priority 1" sets the
         priority of this site to 1. Because the <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file is read
         when the database environment is opened, it will silently overrule
         configuration done before that time.
    </p>
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        Note that if the application never explicitly sets a priority, then a default value of 100
        is used.
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      <p>
         The <code class="methodname">DB_ENV-&gt;rep_set_priority()</code> method configures a database
         environment, not only operations performed using the specified 
         <a class="link" href="env.html" title="Chapter 5.  The DB_ENV Handle">DB_ENV</a>  handle.
    </p>
      <p>
         The <code class="methodname">DB_ENV-&gt;rep_set_priority()</code> method may be called at any time
         during the life of the application.
    </p>
      <p>
         The <code class="methodname">DB_ENV-&gt;rep_set_priority()</code> <span>
            <span>
                  method returns a non-zero error value on failure and 0 on success.
            </span>
            
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      <div class="sect2" lang="en" xml:lang="en">
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              <h3 class="title"><a id="idp54164408"></a>Parameters</h3>
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        <div class="sect3" lang="en" xml:lang="en">
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                <h4 class="title"><a id="idp54163760"></a>priority</h4>
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          <p>
                          The priority of this database environment in the replication group.  The
                          priority must be a non-zero integer, or 0 if this environment cannot be a
                          replication group master.  (See 
                          <a href="../../programmer_reference/rep_pri.html" class="olink">Replication environment priorities</a> 
                          for more information).
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              <h3 class="title"><a id="idp54132032"></a>Class</h3>
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        <p>
                <a class="link" href="env.html" title="Chapter 5.  The DB_ENV Handle">DB_ENV</a>  
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              <h3 class="title"><a id="idp54122592"></a>See Also</h3>
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        <p>
                     <a class="xref" href="rep.html#replist" title="Replication and Related Methods">Replication and Related Methods</a> 
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